Simple calculator (Console application/Java)

  1. import java.util.*; 

  3. public class calc
  4. {
  5.     public static void main(String[] args)
  6.     {
  7.         Scanner sc = new Scanner(System.in);
  8.         Double v1, v2 = 0.0;
  9.         char decn = 'N';
  10.         do {
  11.         System.out.println("Which operation do you want to perform (Please select a number)\n"
  12.         + "1. Additin\n"
  13.         + "2. Subtraction\n"
  14.         + "3. Multiplication\n"
  15.         + "4. Division\n"
  16.         + "5. Modules\n"
  17.         + "6. Power");
  18.         int ops = sc.nextInt();
  19.         switch (ops){
  20.         case 1:
  21.         System.out.println("Please enter the first nubmer: ");
  22.         v1 = sc.nextDouble();
  23.         System.out.println("Please enter the second nubmer: ");
  24.         v2 = sc.nextDouble();
  25.         System.out.println("The sum of (" + v1 + ") and (" + v2 + ") is (" + (v1 + v2) + ")");
  26.         break;
  27.         case 2:
  28.         System.out.println("Please enter the first nubmer: ");
  29.         v1 = sc.nextDouble();
  30.         System.out.println("Please enter the second nubmer: ");
  31.         v2 = sc.nextDouble();
  32.         System.out.println("The difference between (" + v1 + ") and (" + v2 + ") is (" + (v1 - v2) + ")");
  33.         break;
  34.         case 3:
  35.         System.out.println("Please enter the first nubmer: ");
  36.         v1 = sc.nextDouble();
  37.         System.out.println("Please enter the second nubmer: ");
  38.         v2 = sc.nextDouble();
  39.         System.out.println("The product of (" + v1 + ") and (" + v2 + ") is (" + (v1 * v2) + ")");
  40.         break;
  41.         case 4:
  42.         System.out.println("Please enter the first nubmer: ");
  43.         v1 = sc.nextDouble();
  44.         System.out.println("Please enter the second nubmer: ");
  45.         v2 = sc.nextDouble();
  46.         System.out.println("The quotient dividing (" + v1 + ") by (" + v2 + ") is (" + (v1 / v2) + ")");
  47.         break;
  48.         case 5:
  49.         System.out.println("Please enter the first nubmer: ");
  50.         v1 = sc.nextDouble();
  51.         System.out.println("Please enter the second nubmer: ");
  52.         v2 = sc.nextDouble();
  53.         System.out.println("The remainder dividing (" + v1 + ") by (" + v2 + ") is (" + (v1 % v2) + ")");
  54.         break;
  55.         case 6:
  56.         System.out.println("Please enter any nubmer: ");
  57.         v1 = sc.nextDouble();
  58.         System.out.println("Please enter the power of: ");
  59.         v2 = sc.nextDouble();
  60.         System.out.println("The power of (" + v1 + ") is (" + Math.pow(v1, v2) + ")");
  61.         break;
  62.         default:
  63.         System.out.println("Oh'ho you have entered something wrong");
  64.         break;
  65.         }
  66.         System.out.println("Do you want to try again? if yes then type 'Y'");
  67.         decn = sc.next().charAt(0);
  68.         } while(decn == 'Y' || decn == 'y');
  69.         sc.close();
  70.     }
  71. }























































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